You can specify punctuation marks as searchable, in addition to digits and upper- and lower-case letters (automatically set as valid search characters).
Upper- and lower-case letters and the digits 0 to 9 are automatically included as valid search characters in your Endeca-enabled application. However, in the case of other characters, such as certain punctuation characters, you can specify whether the character should be indexed along with alphanumeric characters in a token or instead treated as whitespace.
Search characters are configured globally for all search operations.